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block: bio_set_pages_dirty can't see NULL bv_page in a valid bio_vec 

So don't bother handling it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2018-07-24 14:04:13 +02:00 committed by Jens Axboe
parent 24d5493f20
commit 3bb5098310
1 changed files with 2 additions and 4 deletions
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6
block/bio.c
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@ -1636,10 +1636,8 @@ void bio_set_pages_dirty(struct bio *bio)
int i;
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
if (page && !PageCompound(page))
set_page_dirty_lock(page);
if (!PageCompound(bvec->bv_page))
set_page_dirty_lock(bvec->bv_page);
}
}
EXPORT_SYMBOL_GPL(bio_set_pages_dirty);